Rotatable index



I Aug. 28, 1923. I

Patented Aug. 28, 1923.,

' 1; "res restate QFFEQEJ JAMES n.3nnb, or mourn :TQNA'WANDA, NEW YORK.

r no rari nitn INDEX.

Application filedseptcmber 2,1921. Serial No, 497,874:

To all whom it may concern Be it known that I, JAMES H. RAND, citizen ofthe United States of America, and resident of North Tonawanda, in thecounty of Niagara and State of New York, have invented new and usefulImprovements in R0- tatable Indexes, of which the following is aspecification.

' attached to a telephone instrument;

Figure 2 is a front View of the index; Figure 3 is an enlargedfragmentary cross section of the hub and adjacent parts; and

Figure 4: is a perspective view of one of the indexing sheets removedfrom the frame. 5 represents the hub which is preferably made of acylindrical-piece of wood having a series of longitudinal slots 6 formedin its periphery. A series of radially disposed partitions 7 are mountedin the slots; each partition preferably consisting of a sheet ofcardboard or the like having its inner margin 8 folded over to increasethe thickness of the sheet and furnish a certain amount of springinessby which the partition may be held by friction, without othersecurement, in slot 6. Surrounding the extremities of the partitions 7is a peripheral, icylindrical cover 9 of transparent material such assheet celluloid, which is made from a flat sheet bent around the ends ofthe partitions, the meeting ends being fastened by eyelets 10 or othersuitable means.

The transparent celluloid cylinder is made to have close sliding fitwith the ends of the partitions and is held in place by fric tionwithout other securement.

In each of the open ended compartments thus formed between the hub, thepartitions and the cover, is anrindexing sheet on which are displayedthe lists of telephone numbers or other notations constituting thesubject matter of the index. These indexing sheets are individuallyremovable, so that the inscription may be readily alteredor the sheetsreplaced by new ones, and each sheet is folded on two parallel lines toform a middle section 11, substantially conforming in shape to thesurface of the hub 5 between partitions and bearing on the hub, and twoleaf sections 12, 12, substantially conforming to and bearing againstthepartitions 7. i The inscriptions are placed on the inner surface of theindexing sheet, and it will be obvious that as the device is rotated theseveral leaves will be successively brought into the View of the userthrough the transparent cover 9.

The device is journaled on a bracket which may be made of wire bent toform a stem 13 adapted for attachment to the post of a telephoneinstrument by a suitable clamp 14, and a pair of arms or branches 15having inturned ends which form pivots engaging holes in the ends of thehub.

If'the device is to be used for anindex of more or less permanentcharacter in which few if any changes are to be made, the inscriptionmay be placed directly on the partition sheets 7 instead of upon theindexing The structure provides an inexpensive,

convenient and light indexing device of a knock down type which is easyto assemble and disassemble, pleasing in appearance and well protectedagainst soiling by the transparent celluloid cylinder.

I claim 1. A rotatable index comprising a cylindrical hub havinglongitudinal slots, radially disposed sheets mounted in said slots, anda transparent peripheral cover supported solely by the free extremitiesof the radial sheets.

27 A rotatable index comprising a hub, radially disposed partitions, atransparent peripheral cover, and indexing sheets removably'held in thecompartments formed by the hub, partitions and cover, each indexingsheet being folded to form a middle section and 'two leaf sectionssubstantially conforming respectively to the surfaces of' the hub and ofthe partitions of one of said compartments. I

3. "A rotatable index comprising a hub having longitudinal slots,radially disposed partitions mounted in said slots, a periph cover, eachindexing sheet being folded on parallel lines to form a middle sectionadaptdially disposed sheets mounted on the hub, and a transparentperipheral cover open at its ends embracing and supported solely thefree extremities of the radial sheets.

7 5. A rotatable index comprising a hub, radially disposed partitions, atransparent peripheral cover open at its ends embracing and supportedsolely by the free extremities of the radial partitions, andindex'fsheets v heldin thecompartments formed between" the partitionsand cover and removoble through-the open ends of the cover.

Signed by me at Boston, Massachusetts,

this 31st day of August, 1921. 7'

JAMES HIRAND.

